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This IOCTL is obsolete in Windows 2000 and later, and is no longer supported. A Plug and Play video miniport driver should implement the HwVidGetPowerState function, which provides similar functionality.
Returns the current power-consumption level of the adapter. Support for this nonmodal IOCTL is required for adapters that conform to the VESA DPMS standard.
Major code
Input buffer
None
Output buffer
The miniport driver returns a VIDEO_POWER_MANAGEMENT structure in the VRP OutputBuffer.
Status block
If the miniport driver successfully returns the power-consumption information, it sets the Information member of the STATUS_BLOCK structure to sizeof(VIDEO_POWER_MANAGEMENT); otherwise, the miniport driver sets this member to zero.
Requirements
| Requirement | Value |
|---|---|
| Header | ntddvdeo.h |